首页
登录
职称英语
[originaltext]A researcher at the University of Rochester in New York has found
[originaltext]A researcher at the University of Rochester in New York has found
游客
2023-12-15
72
管理
问题
A researcher at the University of Rochester in New York has found that workers exposed to high levels of lead on the job have an increased risk of dying from brain cancer. Epidemiologist Edwin van Wijngaarden looked at data about more than 300, 000 people over a nine-year period, comparing the kinds of jobs they had with their causes of death, and he saw a correlation. Mechanics are among the workers more likely to develop deadly brain tumors due to occupational lead exposure. He says, automobile and heavy equipment mechanics, painters and welders-who were more likely to be exposed to lead for longer periods of time-had even higher risks of developing brain cancer than workers unexposed to lead. Most research on lead has focused on its effect on children. Van Wijngaarden says not much is known about its impact over a lifetime. Wijngaarden found only 119 brain tumor deaths. He is continuing his research, looking now at patients who already have brain tumors, to see whether they have higher levels of lead in their bones than other patients.
选项
A、there is a definite relationship between high levels of lead and death.
B、the patients with brain tumors have higher levels of lead in their bones.
C、some workers have higher risks of developing brain cancers than others.
D、higher levels of lead have a long-term effect on children over a lifetime.
答案
B
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3276414.html
相关试题推荐
[originaltext]FormulaOneisunderfireagain.Thesafetydebateisragin
[originaltext]FormulaOneisunderfireagain.Thesafetydebateisragin
[originaltext]LuxembourggoestothepollsonSundayinthelastreferendum
[originaltext]TOMOnlinewantstoprovideanonlineHRserviceinBeijingup
[originaltext]TheU.S.ETSislookingatpossiblechangestoGREGeneralTes
[originaltext]L--LiuFeifei,hostofDialogueonCCTV--9R--AlistairRichards,
[originaltext]L--LiuFeifei,hostofDialogueonCCTV--9R--AlistairRichards,
[originaltext]Z:AsChinaisgoingtojointheWTO,thelegalprofessionisfac
[originaltext]Z:AsChinaisgoingtojointheWTO,thelegalprofessionisfac
[originaltext]TheU.S.SpaceAgencyNASAsaysRussia’sorbitingMirspaces
随机试题
You______betiredaftersuchalongjourney.A、mustB、shouldC、canD、havetoA由
[originaltext]ThankyouforhelpingmewithmyEnglish.[/originaltext][audioFi
Largecompaniesneedawaytoreachthesavingsofthepublicatlarge.The
以下著名佛教寺院中,属于法相宗(慈恩宗)祖庭的有()A.慈恩寺 B.大兴善寺
可变更、可撤销合同的类型主要包括()。A.因重大误解订立的合同 B.因胁
凝血时间测定最敏感的方法是A.毛细血管法B.普通试管法C.玻片法D.活化凝血时间
按照汇率制度的不同,汇率可分为( )。A.基本汇率和套算汇率 B.固定汇率和
左边给定的是立方体,右边哪一项不是它的外表面展开图? A.如上图所示 B.如
可引起心绞痛的疾病是 A?主动脉瓣关闭不全B?梅毒性主动脉炎C.肥厚型心肌
A.抗结核治疗 B.病灶清除术 C.肾部分切除术 D.肾切除术 E.肾造
最新回复
(
0
)